240sx woes
03-19-2008, 07:13 PM
#1
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240sx woes
my setup:
90 w/dohc ran perfect presetup
ssac bottommount mani
sr t25
sr 370cc
sr sidemount w/custom intake
aftermarket sr downpipe
sr oem blowoff valve (open atmos)
n60 maf
no other mods to the engine cept egr removal and gutted cat + catback
note: cat and catback are not connected bc its turned and cold outside.
fuel management:
bikirom 3.2.3
innovative lm-1 ( not hooked up yet)
it has sit for a while but gas has been removed and replaced with 91 and showed no change.
problems:
pig rich at idle
stubbles if revved at all
refuses to rev past 1500 rpms, ignores the gas pedal
can not check engine codes but has cel on
i can hear the bov psst vaguely at idle(i assume this isnt a big deal since its a tiny turbo)
my theories:
maf isnt wired correctly
when i unplugged the maf to test it the car did not change its idle
injectors are stuck/leaky
have not tested yet
bikirom sucks
ive changed between the oem ka dohc map as well as the "370cc/n60" map that was included in the setup with no changes. but does seem to upload/download maps according to progress bar.
any suggestions at all are more than welcome. this has been a headache for months.
90 w/dohc ran perfect presetup
ssac bottommount mani
sr t25
sr 370cc
sr sidemount w/custom intake
aftermarket sr downpipe
sr oem blowoff valve (open atmos)
n60 maf
no other mods to the engine cept egr removal and gutted cat + catback
note: cat and catback are not connected bc its turned and cold outside.
fuel management:
bikirom 3.2.3
innovative lm-1 ( not hooked up yet)
it has sit for a while but gas has been removed and replaced with 91 and showed no change.
problems:
pig rich at idle
stubbles if revved at all
refuses to rev past 1500 rpms, ignores the gas pedal
can not check engine codes but has cel on
i can hear the bov psst vaguely at idle(i assume this isnt a big deal since its a tiny turbo)
my theories:
maf isnt wired correctly
when i unplugged the maf to test it the car did not change its idle
injectors are stuck/leaky
have not tested yet
bikirom sucks
ive changed between the oem ka dohc map as well as the "370cc/n60" map that was included in the setup with no changes. but does seem to upload/download maps according to progress bar.
any suggestions at all are more than welcome. this has been a headache for months.
Last edited by musicmaniac; 03-19-2008 at 07:22 PM.
03-20-2008, 09:36 AM
#4
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Re: 240sx woes
Why don't you just go to a 240 based forum if you really want help? This mostly Honda people on here and most likely can't help you.
www.midatlantic240sx.com
www.zilvia.com
www.midatlantic240sx.com
www.zilvia.com
03-20-2008, 09:49 AM
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Re: 240sx woes
Why don't you just go to a 240 based forum if you really want help? This mostly Honda people on here and most likely can't help you.
www.midatlantic240sx.com
www.zilvia.com
www.midatlantic240sx.com
www.zilvia.com
03-21-2008, 01:01 AM
#6
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Re: 240sx woes
are you using a 300zx fuel filter?
recheck the wiring on the maf, if that doesnt work then try swapping out mafs. you can use a SOHC KA maf too.
check your vacuum lines and grounds
check your spark plugs (i recommend NGK Iridiums)
check your timing
ok time to go back to sleep
recheck the wiring on the maf, if that doesnt work then try swapping out mafs. you can use a SOHC KA maf too.
check your vacuum lines and grounds
check your spark plugs (i recommend NGK Iridiums)
check your timing
ok time to go back to sleep
03-21-2008, 03:23 AM
#7
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Re: 240sx woes
make sure your coolant temp sensor is functioning properly.it will make it run rich...don't know about "pig " rich though bc this doesn't really mean anything. do you have actual numbers or how do you know its that rich? smell of fuel?
that is if your maf is wired correctly though. like everyone said it does sound liek a maf problem BUT it shouldn't effect idle especially if its unplugged
that is if your maf is wired correctly though. like everyone said it does sound liek a maf problem BUT it shouldn't effect idle especially if its unplugged
03-23-2008, 02:35 PM
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Re: 240sx woes
check your timing and make sure your fpr is working correctly, did you upgrade your fuel pump? most likely not the problem but it knocks something out. all of your cylinders getting spark?
03-23-2008, 04:18 PM
#9
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Re: 240sx woes
i noticed i have the black/silver line and black/white wires swapped but i didnt have time to correct it yet.
ive had the aftermarket fuel pump preinstall so thats not it and also oem fuel reg.
im gonna fix the maf wiring tomorrow but when i unplugged it the idle did not change. could it still be the wiring even tho?
timing was also not touched
ive had the aftermarket fuel pump preinstall so thats not it and also oem fuel reg.
im gonna fix the maf wiring tomorrow but when i unplugged it the idle did not change. could it still be the wiring even tho?
timing was also not touched
Last edited by musicmaniac; 03-23-2008 at 04:21 PM.
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